12256720235271 has 6 divisors (see below), whose sum is σ = 17704151450960. Its totient is φ = 8171146823508.

The previous prime is 12256720235261. The next prime is 12256720235273. The reversal of 12256720235271 is 17253202765221.

12256720235271 is a `hidden beast` number, since 1 + 2 + 2 + 56 + 72 + 0 + 2 + 3 + 527 + 1 = 666.

It is not a de Polignac number, because 12256720235271 - 2¹³ = 12256720227079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256720235273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680928901951 + ... + 680928901968.

Almost surely, 2^{12256720235271} is an apocalyptic number.

12256720235271 is a deficient number, since it is larger than the sum of its proper divisors (5447431215689).

12256720235271 is a wasteful number, since it uses less digits than its factorization.

12256720235271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361857803925 (or 1361857803922 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 12256720235271 in words is "twelve trillion, two hundred fifty-six billion, seven hundred twenty million, two hundred thirty-five thousand, two hundred seventy-one".